Hiblow HP-80 s – The Most Trusted Aerobic Air Pump in the Industry! Replaces HP-80, Thomas 5078S, Secoh EL-80, Medo LA-80B, and other 80 LPM units. Aerobic Septic or Koi Pond Air Pump. Fits up to 750 GPD Aerobic Systems (Check with your septic manufacture to make sure pump is…